Rotary fan



(No Model.)

J. M. SEYMOUR.

ROTARY FAN.

No. 325,453. Patented Sept. 1, 1885..

u. PUERS. Pfmlvi-ilhographer. Washington. D. a

UNITED STATES ATENT rricn.

JAMES M. SEYMOUR, OF NEW'ARK, NEW JERSEY.

ROTARY FAN.

SPECIFICATION forming part of Letters Patent No. 325,453, dated September 1, 1885.

Application filed May I, 1855.

T 0 M whom it may concern.-

Be it known that I, JAMES M. SEYMOUR, of Newark, in Essex county and State of New Jersey, have invented new and useful Iniprovements in that class of rotary fans which are used to agitate the air in offices, restaurants, and other places to promote the comfort of the occupants.

These fans have generally been suspended from the ceiling, but have sometimes been mounted on pillars standing upon the floor or table. They have generally consisted of two horizontally-projecting vanes or arms rotating around a vertical axis and driven by power derived from some convenient motor in the vicinity. They have been provided with clutching devices, so that,without arresting the motor or throwing off belts, the fans can be dis connected from the motor.

The subject of my present invention is the adjustment of the fan to regulate the amount of atmospheric disturbance without changing the speed of the fans revolution, because variations of temperature or variations of sensitiveness in different individuals render desirable an adjustment of disturbance, but it is inconvenient to accomplish this by change of speed. I therefore make each fan adjustable as to inclination by a rotation upon its own axis.

In the following particular description reference is had to the accompanying drawings, wherein Figure 1 is a perspective view of my invention in action. Fig. 2is an elevation of the same in action. Fig. 3 is a plan of the same.

A is the support for the driving-pulley B, which takes motion by a belt from any convenient motor. The support A is usually a hanger attached to the ceiling, but that is immaterial. I represent it as a hanger for con venience only.

The shaft (3, to which the pulley Bis attached, carries also the head D, in which are bearings for the fans E E. The head D, being below the hanger A, is provided with an oilcup, to, to arrest and retain any lubricatingoil which may drip from said hanger, because it is undesirable that said lubricant shall either descend to the fans or fall upon those who may chance to be below.

(No model.)

The fans E are each made adjustable as to the inclination of its face to the plane of mo- 1 tion by rotating said fan upon its ownaxisfi and therefore each fan has an independentaxial mounting, because relatively the fans on opposite sides of the head D rotate in opposite directions. I thereforefind it convenient to make the head D with a huh, I), on each side and projecting in opposite directions from and perpendicular to a transverse axial plane of the shaft 0. The hubs b are bored out to receive the wrists d,which support the vanes E, being attached thereto in any suitable way. For convenience I provide each fan with an axial stud, e, which is adapted to be inserted in the end of the hub (Z and fastened there by a setscrew or other proper de vice.

The rotary movement of each fan upon its own axis to adjust its obliquity to the plane of its motion may be accomplished by a variety of devices without stopping its revolution-as, for instance, each wrist (1 may be provided with a laterally-projecting arm to which may be joined a rod, and by pushing or pulling on said rod said wrist may be partly rotated in the hub b. The rods from the two several wrists may be joined together and all be coincidently operated by the same movement of the hand. The hand-piece, arranged to be grasped by the person regulating the fan, should be made to revolve freely upon the rod. I mention this mode of regulation as an illustration only. I prefer to make it in a'slightly different and more convenient manner, which, however, does not introduce any different principle of operation.

Each wrist b is provided with a worm-wheel, g, which when in position lies in the same axial plane of the driving-shaft O, and I place between said worm-gears and in engagement with them a screw, H, the revolution of which will rotate the worm and fans in the manner desired. The stem h of the screw H projects to a point within convenient reach of the operators hand and is provided with a handhold, 2. As the head D and fans are continually revolving with the shaft G, it is only necessary to seize and hold fast the hand-hold i, and thus arrest the revolution of the screw H, to change as desired the adjustment more rapidly than by the action of the screw H. Said screw may be allowed an endwise movement, and then by pushing or pulling it will act as a rack to cause the rapid movement required; or a rack might be substituted for the screw without changing the principle of operation. The use of a device having a free endwise movement would, however, require a friction or other device to. overcome the resistance of the air to change the position of the fans. The screw acts as a motor and brake, and the fans will not only be moved to position but securely held in the position selected.

For convenience in manufacture the head D is cast integral with the hubs b and the oil-cup a, and at one end is bored to receive the end of the shaft 0 and at the other end to receive the stem H. Thehub bisbored to receive the wrist d,which is held in place by washer k, which laps on the ends of the hub b, and the screw m, which fastens said washers to the wrist. A cell is madein the end of the shaft 0 for the journal n on the end of the screw H. The parts are therefore easy to make and easy to assemble.

The wrists d are .put in place and secured by washers 7c and screws m. The stem h of the screw H is then passed down through the oil-cup between the worm-wheels g, and the screw H engages with said wheels. At the lower end of said screw there is a shoulder, 10, and this restrains said screw in one direction, while the end of the shaft 0 restrains it in the opposite direction.

g is a set-screw by which the head is fastened to the shaft 0.

Having described my invention, I claim 1. In combination, a rotating fan whereof each vane is capable of rotation on its own axis to adjust its obliquity to the plane of its motion, and a hand-piece, pendent parallel with the axis of revolution, attached to said vane at a point eccentric to said axis,whereby without stopping the revolution the vane may be partly rotated and its plane of motion may be changed at will.

2. In combination, a rotating fan whereof each vane is capable of rotation on its own axis, and provided with a lateral project-ion, andahand-piece, pendent parallel with the axis of revolution, in engagement with said projection,whereby an endwise movement of said hand-piece may without pause in its rotation partly rotate said vane and its obliquity be changed as desired.

3. In combination, a rotating fan whereof each vane is capable of rotation on its own axis, and provided with a lateral projection the end whereof is curved concentric with the axis of said vane, and is furnished with a worm-gear anda screw, H, in engagement therewith, said screw being provided with a hand-piece,whereby it may be seized and the obliquity of the vanes changed as desired.

JAS. M. SEYMOUR. 

